Plastomes of eight Ligusticum species: characterization, genome evolution, and phylogenetic relationships.

ABSTRACT:

Background

The genus Ligusticum consists of approximately 60 species distributed in the Northern Hemisphere. It is one of the most taxonomically difficult taxa within Apiaceae, largely due to the varied morphological characteristics. To investigate the plastome evolution and phylogenetic relationships of Ligusticum, we determined the complete plastome sequences of eight Ligusticum species using a de novo assembly approach.

Results

Through a comprehensive comparative analysis, we found that the eight plastomes were similar in terms of repeat sequence, SSR, codon usage, and RNA editing site. However, compared with the other seven species, L. delavayi exhibited striking differences in genome size, gene number, IR/SC borders, and sequence identity. Most of the genes remained und

SUBMITTER: Ren T 

PROVIDER: S-EPMC7663912 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature